“Is it worth while, then, for us to undertake the adventure?” I questioned.

“For centuries past one-half of the wealth of one of the richest families in China has been placed in the vaults which I call my ancestral halls,” he returned. “This wealth consists of jade, precious stones—especially rubies—pearls and stores of gold and silver. There is enough to ransom a kingdom, and as I cannot use it myself I should like you to get it—if you can. Your task would be difficult in any event, for to rob any ancestral hall is a great crime in China. Even the graves of the poor, which are stone or mud vaults with roofs of bamboo and palm leaves, are respected by all. Yet your greatest danger is from Mai Lo. If he cannot rob my ancestral halls himself he will try to prevent anyone else from doing so.”

“Well, then,” said Archie; “let’s toss him overboard, while we have the chance. He’s only a Chinaman.” The next instant, seeing the amused smile on the Prince’s face, he realized what he had said and began to apologize. “It’s so hard, sir,” he added, “to think of you except as one of ourselves.”

Perhaps the naive compliment pleased the Prince, for he laughed and said:

“It might be a wise thing to cast Mai Lo into the sea. But I do not think you will undertake murder, even to secure my treasure. So I will do what I can to enable you to outwit the mandarin. Can you find me a piece of paper and a small brush?”

Joe got them from his cabin in a few moments, and while he was absent we all sat in silence.

I spread the piece of paper upon the coverlet in front of the Prince, and dipped the brush in ink for him. His left arm was broken and useless, but fortunately he could use his right arm and hand, though with difficulty. At once he began writing in Chinese characters upon the paper, and presently he finished and held out the brush for me to take.

“You cannot read my signature, Sam,” said he, “but it is there, and will be recognized. It is an order to all my dependents to recognize you and your companions as my guests for one year, and to serve you as faithfully as they would myself. I have added that my spirit will watch to see if I am obeyed and to take vengeance if I am not. That is, of course, nonsense to us; but it ought to be effective with my people. Take the paper, Sam, and guard it carefully. Stay! call in Mai Lo for a moment.”

I did so, and the Prince said to his attendant in an easy tone:

“Witness this order, Mai Lo.”